KR20170138609A

KR20170138609A - Apparatus for removing by-product gas in pipe

Info

Publication number: KR20170138609A
Application number: KR1020160070184A
Authority: KR
Inventors: 김광훈; 정상근; 서정현; 이기원; 박광희
Original assignee: 주식회사 포스코
Priority date: 2016-06-07
Filing date: 2016-06-07
Publication date: 2017-12-18
Also published as: KR101825693B1

Abstract

A piping by-product gas removing apparatus is disclosed. The apparatus for removing piping by-product gas according to an embodiment of the present invention includes a moving frame having a steam generating device, an intake pipe connected to one end of the steam generating device and the replacement pipe, And a steam pipe connected to the other end of the steam generator and the replacement pipe for supplying the steam generated by the steam generator to the replacement pipe.

Description

[0001] APPARATUS FOR REMOVING BY-PRODUCT GAS IN PIPE [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an apparatus for removing piping by-product gas, and more particularly, to an apparatus for safely removing residual gas remaining during piping replacement.

Generally, the by-product gas of the steelworks includes blast furnace gas produced as a blast furnace in the blast furnace, converter gas generated in the steelmaking process, and coke gas produced as a byproduct in the coke making process. These by- As the heating fuel for operating the fuel cell.

These byproduct gases contain tar and impurities and form by-products that accumulate in the piping during the passage through the piping.

By-products accumulated in long-term piping may cause pipe clogging and piping corrosion by reducing pipe diameter, so the piping should be replaced at regular intervals.

However, the by-product gas in the piping is not only harmful to human body but also causes fire and explosion accident due to toxic gas leaked at the time of replacement.

In addition, the by-products adhered to the pipe are difficult to remove easily, and there is always a risk due to the toxic gas remaining in the un-removed by-products.

Korean Patent No. 0785245 (published on Dec. 12, 2007)

Embodiments of the present invention are to provide a piping by-product gas removing apparatus capable of efficiently removing laundered gas in a piping during piping replacement.

According to an aspect of the present invention, there is provided an apparatus for removing by-product gas from a replacement pipe, the apparatus comprising: a moving frame having a steam generating device; a steam generator connected to one end of the steam generator and the replacement pipe, And a steam pipe connected to the other end of the steam generator and the replacement pipe for supplying steam generated by the steam generator to the replacement pipe, The generating device is intended to provide a piping by-product gas removing device for generating steam by burning at least the by-product gas supplied by the intake unit.

The intake unit includes an intake pump for generating a suction force, a first intake pipe for connecting the inlet of the intake pump to one end of the replacement pipe, a second intake pipe for connecting the outlet of the intake pump to the steam generator, .

And a fuel supply unit provided in the moving frame for supplying fuel for ignition of the steam generator.

The fuel supply unit includes a fuel tank for storing fuel, a fuel pipe for connecting the fuel tank and the second intake pipe, and a fuel control valve provided in the fuel pipe.

And a water supply unit provided in the moving frame for supplying water to the steam generator.

The water supply unit includes a water supply tank for storing water, a water supply pipe connecting the water supply tank and the steam generator, and a water supply valve installed in the water supply pipe.

The embodiments of the present invention can effectively remove the by-product gas in the piping during piping replacement, thereby remarkably reducing the risk of poisoning or explosion by the operator and preventing environmental pollution caused by the discharge of the by-product gas to the outside.

1 is a perspective view schematically showing an apparatus for removing piping by-product gas according to an embodiment of the present invention.
FIG. 2 illustrates a piping by-product gas removal device connected to a replacement pipe according to an embodiment of the present invention.
FIG. 3 illustrates a flow of removing by-product gas according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The embodiments described below are provided by way of example so that those skilled in the art will be able to fully understand the spirit of the present invention. The present invention is not limited to the embodiments described below, but may be embodied in other forms. In order to clearly explain the present invention, parts not related to the description are omitted from the drawings, and the width, length, thickness, etc. of the components may be exaggerated for convenience. Like reference numerals designate like elements throughout the specification.

FIG. 1 is a perspective view schematically showing an apparatus for removing piping by-product gas according to an embodiment of the present invention, and FIG. 2 shows a state where a piping by-product gas removing apparatus according to an embodiment of the present invention is connected to a replacement piping.

Referring to FIGS. 1 and 2, the piping by-product gas removing apparatus 10 according to the embodiment of the present invention includes a moving frame 20 in the form of a bogie capable of smoothly moving toward a replacement pipe 3 to be replaced.

The by-product gas removing device 10 performs the removing operation of the by-product gas through the connection pipes 4 and 5 provided at both ends of the replacement pipe 3 in a state of being moved toward the replacement pipe 3 through the moving frame 20 .

The moving frame 20 is provided with a steam generator 30 for generating by-produced steam by supplying the by-product gas of the replacement pipe 3.

The steam generator 30 is connected to the intake unit 40 for sucking the by-product gas from one side of the replacement pipe 3 and the steam generated in the steam generator 30 is supplied to the replacement pipe 3 at the other side. The steam pipe 50 is connected to the steam pipe 50 for heat treatment.

The intake unit 40 includes an intake pump 41 provided in the movable frame 20 to generate a suction force and a first connecting pipe 4 provided at an inlet of the intake pump 41 and at one end of the replacement pipe 3, And a second intake pipe 43 connecting the outlet of the intake pump 41 and the steam generator 30. The first intake pipe 42 is connected to the steam generator 30,

The first intake pipe 42 may be made of a flexible hose and may be detachably connected to the first connection pipe 4 of the replacement pipe 3 through a connector or a one-touch fitting.

The first connecting pipe 4 may be provided with a first manual valve 6 for controlling the supply of the byproduct gas in the replacement pipe 3 to the first intake pipe 42, Can be connected to the first manual valve (6).

The intake pump 41 sucks the by-product gas of the replacement pipe 3 through the first intake pipe 42 and then supplies the by-product gas to the steam generator 30 through the second intake pipe 43.

The second intake pipe 43 may be connected to a fuel supply unit 60 that provides fuel for initial ignition and combustion of the steam generator 30. [

The fuel supply unit 60 can be provided in the moving frame 20 and includes a fuel tank 61 for storing fuel and a fuel pipe 61 for connecting the middle of the fuel tank 61 and the second intake pipe 43 62 and a fuel control valve 63 provided on the fuel pipe 62. [

The byproduct gas supplied by the intake pump 41 and the fuel supplied from the fuel supply unit 60 flow into the second intake pipe 43, and the mixed by-product gas and fuel flow into the second intake pipe 43 to the burner (not shown) of the steam generator 30.

The steam generator 30 may be provided in the form of a conventional boiler.

The burner is interposed between the steam generator (30) and the second intake pipe (43) and provides a temperature and oxygen higher than the firing point so as to be burned in the combustion chamber of the steam generator (30).

The mixed gas of the fuel and the by-product gas supplied through the second intake pipe 43 is combusted in the combustion chamber of the steam generator 30, and the combustion gas is exhausted to the outside through the exhaust pipe 31.

Accordingly, harmful components such as Naphthalene, Tar, sulfur, ammonia, etc. provided in the replacement pipe 3 are all burnt in the combustion chamber of the steam generator 30.

The steam generator 30 may be connected to the water supply device 70 to generate steam using heat generated during the combustion of the mixed gas.

The water supply device 70 includes a water supply tank 71 provided in the moving frame 20, a water supply pipe 72 connecting the water supply tank 71 and the steam generating device 30, And a water supply valve 73 for controlling the supply of water.

A water supply pump (not shown) for pumping the stored water may be installed in the water supply tank 71. Water pumped by the water supply pump may be supplied to the upper portion of the steam generator 30 along the water supply pipe 72 do.

Water supplied to the steam generator 30 through the water supply pipe 72 may be sprayed into a steam generating chamber (not shown) located at the upper portion of the steam generator 30 in the form of a spray, The mixed gas can be converted into steam by the heat burned and then discharged through the steam outlet 32. [

The steam discharged through the steam outlet 32 may be supplied to the other end of the replacement pipe 3 through the steam pipe 50.

The steam pipe 50 may be made of a flexible material hose and may be detachably connected to the second connecting pipe 5 of the replacement pipe 3 through a connector or a one-touch fitting.

The second connecting pipe 5 may be provided with a second manual valve 7 for controlling the supply of the steam of the steam pipe 50 to the replacement pipe 3, (Not shown).

The steam pipe (50) may be provided with a steam control valve (51) for controlling the pressure of the steam flowing through the steam pipe (50).

Hereinafter, a method for removing by-product gas using a piping by-product gas removing apparatus according to an embodiment of the present invention will be described with reference to FIG.

First, the by-product gas generated during the coke manufacturing process, the steelmaking process and the steelmaking process at the steelworks is transferred to the equipment used as the heating fuel through the piping which is continuously connected by the shutoff valves 1 installed at regular intervals .

In this case, when it is necessary to replace the piping, the piping by-product gas removing device 10 of the present embodiment is moved and carried to the replacement piping 3 which requires replacement work.

After the movable frame 20 is moved to the side of the replacement pipe 3, the first connection pipe 4 and the second connection pipe 2 provided in the replacement pipe 3 are closed while the shutoff valve 1 provided at both ends of the replacement pipe 3 is closed. And the first intake pipe 42 and the steam pipe 50 are connected to the two connecting pipes 5, respectively.

Thereafter, the intake pump 41 is operated while the first manual valve 6 and the second manual valve 7 are opened and opened, and the fuel is supplied from the fuel supply unit 60 to the second intake pipe 43 .

The byproduct gas in the replacement pipe 3 and the fuel supplied from the fuel supply unit 60 are mixed in the second intake pipe 43 and the mixed fuel gas is supplied to the burner of the steam generator 30, And then burned.

At this time, water is supplied from the water supply device 70 to the steam generator 30, steam is generated by the combustion heat of the mixed gas in the steam generator 30, and the generated steam is supplied through the steam pipe 50 And flows into the replacement pipe 3 side.

As such, since the by-product gas in the replacement pipe 3 is burned in the combustion chamber of the steam generator 30, the toxic byproduct gas is prevented from being discharged to the outside, and the steam generated in the steam generator 30 is replaced And flows into the pipe 3 side.

Therefore, the steam introduced into the replacement pipe 3 through the steam pipe 50 pushes off the by-product gas in the replacement pipe 3, and also pushes off toxic gas remaining in the tar fixed to the bottom of the replacement pipe 3 The by-product gas can be completely removed.

In other words, it is difficult to discharge the toxic gas remaining on the tar or the like existing on the bottom of the replacement piping 3 only by the suction force of the intake pump 41, but the high-temperature high-pressure steam flowing into the replacement piping 3 causes toxic gas As a result, the gas removal efficiency in the replacement pipe 3 is remarkably improved.

When the removal of the by-product gas existing in the replacement piping 3 is completed after a predetermined time has elapsed, the steam introduced into the replacement piping 3 through the steam piping 50 flows through the first intake piping 42, And is supplied to the pipe 43 side.

Accordingly, when the thermal power in the combustion chamber of the steam generator 30 is weakened, the operator can easily recognize that the removal of the by-product gas existing in the replacement pipe 3 is completed, .

The foregoing has shown and described specific embodiments. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined in the appended claims.

1: shutoff valve, 3: replacement piping,
40: by-product gas removing device, 20: moving frame,
30: steam generator, 40: intake unit,
41: intake pump, 42: first intake pipe,
42: second intake pipe, 50: steam pipe,
51: Steam control valve, 60: Fuel supply unit,
61: fuel tank, 62: fuel piping,
63: fuel control valve, 70: water supply device,
71: water supply tank, 72: water supply pipe,
73: Water supply valve.

Claims

An apparatus for removing by-product gas from a replacement pipe,
A moving frame having a steam generator;
An intake unit connected to one end of the steam generator and the replacement pipe, for sucking the by-product gas in the replacement pipe and supplying it to the steam generator; And
And a steam pipe connected to the steam generator and the other end of the replacement pipe to supply the steam generated by the steam generator to the replacement pipe,
Wherein the steam generator generates at least steam by burning by-product gas supplied by at least the intake unit.

The method according to claim 1,
The intake unit includes an intake pump for generating a suction force, a first intake pipe connecting the inlet of the intake pump and one end of the replacement pipe, and a second intake pipe connecting the outlet of the intake pump to the steam generator Included piping by-product gas removal device.

3. The method of claim 2,
Further comprising a fuel supply unit provided in the moving frame for supplying fuel for ignition of the steam generator.

The method of claim 3,
Wherein the fuel supply unit includes a fuel tank for storing fuel, a fuel pipe connecting the fuel tank and the second intake pipe, and a fuel control valve installed in the fuel pipe.

The method according to claim 1,
And a water supply unit provided in the moving frame for supplying water to the steam generator.

6. The method of claim 5,
Wherein the water supply unit includes a water supply tank for storing water, a water supply pipe connecting the water supply tank and the steam generator, and a water supply valve installed in the water supply pipe.